Path: csiph.com!feeder.erje.net!2.us.feeder.erje.net!feeder.usenetexpress.com!feeder-in1.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!buffer1.nntp.dca1.giganews.com!buffer2.nntp.dca1.giganews.com!nntp.earthlink.com!news.earthlink.com.POSTED!not-for-mail NNTP-Posting-Date: Sun, 13 Aug 2017 12:56:41 -0500 Message-ID: <599092D8.532C@ix.netcom.com> Date: Sun, 13 Aug 2017 10:56:40 -0700 From: The Starmaker Reply-To: starmaker@ix.netcom.com X-Mailer: Mozilla 3.04Gold (WinNT; U) MIME-Version: 1.0 Newsgroups: sci.physics.relativity Subject: Re: Why is there more than one explanation for the Twin Paradox References: <1cb6775d-d2c1-498b-9576-088e3e7ed2be@googlegroups.com> <4790542.Sb9uPGUboI@PointedEars.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Antivirus: Avast (VPS 170813-0, 08/13/2017), Outbound message X-Antivirus-Status: Clean Lines: 52 X-Usenet-Provider: http://www.giganews.com NNTP-Posting-Host: 108.219.229.47 X-Trace: sv3-FF4622SotwJ2HAflN0wHQ8MKKt/t1LEu28OGdqilcKUTiYTxstJE8smOE/rESfEI4whMeQHx/rPKCQy!se6oRljrYl1LfEvVqpp18tZZDCumPRu64YMZ7zraSM7b9LBlB9v4KgS/zxkpam3vcEsBJ9NqYvfK!gwnsq0juEfE= X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 3309 Xref: csiph.com sci.physics.relativity:428538 Nicolaas Vroom wrote: > > On Monday, 7 August 2017 16:22:34 UTC+2, tjrob137 wrote: > > On 8/4/17 8/4/17 - 6:22 PM, Thomas 'PointedEars' Lahn wrote: > > > Tom Roberts wrote: > > >> [...] > > > *time dilation* (a *proper* scientific term that, in contrast to other > > > scientific terms, for unknown reasons you ridiculously liked to put in > > > double-quotes, as if it were not). > > > > I put "time dilation" and "length contraction" in quotes because they are > > VERY POOR names for the phenomena they refer to. That is, for "time dilation" > > time does NOT actually dilate, and for "length contraction" lengths do NOT > > actually contract -- those phrases refer to the clock or object in question, > > which in all cases is UNAFFECTED. > > Both "time dilation" and "length contraction" are really geometrical > > projections that affect how observers moving relative to an object > > will MEASURE the object, and the phrases do not capture this fact at all > > -- at face value they imply that the object itself is somehow changed, > > but it isn't. > > Is the concept geometrical projections equivalent with something mathematical? > > Does this also indicate that both "time dilation" and "length contraction" > are not something physical? In the sense that when you heat an iron rod its > length becomes longer? > > But what about a moving clock i.e. when two clocks are moved along > different path and when they meet the number of ticks is different? > > Nicolaas Vroom > But the question is...When did the number of ticks become different? At what time did the number of ticks become different? 1) right away 2) a little while later 3) a week later 4) sometimes 5) all the time 6) the first tick I gotta get into my car and go varrrooooooooooooommmm.